Perhaps the most important theological point of this verse was that the fruits were equal. The success of the Lord's plan depended not upon whether the fruit began on a branch that was once natural, or one that was grafted in. The strength of the root was sufficient for all.
The original Abrahamic covenant produces God's peculiar (his very own) people, and the benefits of the covenant produce children capable of exaltation, whether they come to the covenant through heritage (the Jews) or adoption (the Gentles). All receive the benefits of the gospel equally, and before the Lord there is respecting of persons. In Paul's terms: "Gal. 3:27-29
27 For as many of you as have been baptized into Christ have put on Christ.
28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise."